Make a Jurassic Park

Any dinosaur imaginable. Non agressive herbivores could roam a one hundred square mile plain. Agressive/dangerous dinosaurs would be in paddocks ranging from half to fifteen square mile, plexiglass enclosures, and highly aggressive carnivores would be kept well away from each other. Enclosures would have a forest, a mountain, and an open plain. There would be vendors, scientists, security teams, ticket people, clerks, managers, lawyers, and snipers.

I would make my Jurassic Park on a big tropical island, covered with mountains, plains, forests and rivers.

It would have all the amenities neccessary to the people, such as Entrance, vendors, restaurants, museums, hotels, etc... and tours like River Adventure, Car Tour, Balloon Tour, and even a Chopper flight above the park.

The paddocks would be Cement and Plexiglass, very thick. They'd have a large moat for the carnivores, and nothing else for the ebivores. There should be cameras all over, and Turrets.

Visitor would be secured by small wood fences before the actual fences, and they will be always kept in sight and accompanied by the Park' staff, if they walk on the stone path. The car tours, instead, go on all the herbivores paddocks, and in some small carnivores too.

As long as dinosaurs go, I'd keep'em sorted by time period, and location, in order to seem more realistic as possible. Herbivores will always be kept in herds, and when possible, carnivores in packs. Those are the species:

-Theropods: Herrerasaurus; Coelophysis; Dilophosaurus; Ceratosaurus; Cryolophosaurus; Australovenator; Metriacanthosaurus (Yangchuanosaurus); Baryonyx; Suchomimus; Spinosaurus; Carnotaurus; Tarascosaurus; Megalosaurus; Allosaurus; Giganotosaurus; Carcharodontosaurus; Acrocanthosaurus; Proceratosaurus; Yutyrannus; Albertosaurus; Tarbosaurus; Tyrannosaurus; Therizinosaurus; Gallimimus; Ornithomimus; Deinocheirus; Compsognathus; Ornitholestes; Oviraptor; Gigantoraptor; Velociraptor; Deinonychus; Balaur; Troodon;

-Sauropods: Brachiosaurus; Camarasaurus; Apatosaurus; Mamenchisaurus; Argentinosaurus; Amargasaurus; Titanosaurus;
-Ornithopods: Triceratops; Styracosaurus; Einiosaurus; Torosaurus; Protoceratops; Centrosaurus; Ankylosaurus; Edmontonia; Stegosaurus; Kentrosaurus; Tuojiangosaurus; Dryosaurus; Hypsilophodon; Pachycephalosaurus; Homalocephale; Camptosaurus; Iguanodon; Ouranosaurus; Parasaurolophus; Lambeosaurus; Corythosaurus; Edmontosaurus; Maiasaura;  Brachylophosaurus;

Aquatic reptiles (and fish): Ichtyosaurus,Mosasaurus; Elasmosaurus; Kronosaurus; Liopleurodon; Mauisaurus; Platecarpus; Dunkleosteus; Megalodon;

Flying reptiles: Pteranodon; Cearadactylus; Quetzalcoatlus, Hatzegopteryx; Ornitocheirus; Pterodaustro; Nyctosaurus; Tapejara;

I agree exactly with DinoSteve, but I'd add a few more theropods and one more aquatic reptile.

Theropods- Siats Meekerorum, and Lythronax Argestes.

Aquatic Reptiles- Predator X.

Also I'd add some desert areas for certain Dinosaurs and everything else DinoSteve said.